I can examine you can examine he can examine we can examine you can examine they can examine
V-ing form
I can be examining you can be examining he can be examining we can be examining you can be examining they can be examining
Perfect
I can have examined you can have examined he can have examined we can have examined you can have examined they can have examined
V-ing perfect
I can have been examining you can have been examining he can have been examining we can have been examining you can have been examining they can have been examining
Negation
Simple form
I cannot examine you cannot examine he cannot examine we cannot examine you cannot examine they cannot examine
V-ing form
I cannot be examining you cannot be examining he cannot be examining we cannot be examining you cannot be examining they cannot be examining
Perfect
I cannot have examined you cannot have examined he cannot have examined we cannot have examined you cannot have examined they cannot have examined
V-ing perfect
I cannot have been examining you cannot have been examining he cannot have been examining we cannot have been examining you cannot have been examining they cannot have been examining
Interrogative form
Simple form
can I examine? can you examine? can he examine? can we examine? can you examine? can they examine?
V-ing form
can I be examining? can you be examining? can he be examining? can we be examining? can you be examining? can they be examining?
Perfect
can I have examined? can you have examined? can he have examined? can we have examined? can you have examined? can they have examined?
V-ing perfect
can I have been examining? can you have been examining? can he have been examining? can we have been examining? can you have been examining? can they have been examining?
Interro-negative form
Simple form
can I not examine? can you not examine? can he not examine? can we not examine? can you not examine? can they not examine?
V-ing form
can I not be examining? can you not be examining? can he not be examining? can we not be examining? can you not be examining? can they not be examining?
Perfect
can I not have examined? can you not have examined? can he not have examined? can we not have examined? can you not have examined? can they not have examined?
V-ing perfect
can I not have been examining? can you not have been examining? can he not have been examining? can we not have been examining? can you not have been examining? can they not have been examining?